Hydraulically actuated derrick attachment for vehicles



March 6, 1962 G, E, MCGUIRE ETAL 3,023,914

HYDRAULICALLY ACTUATED DERRICK TTACHMENT FOR VEHICLES 2 Sheets-Sheet lOriginal Filed Aug. 5, 1955 A Trae/Evi Mach 6, 1962 E. MGGUIRE ETAL3,023,914

HYDRAULICALLY ACTUATED DERRICK ATTACHMENT FOR VEHICLES Original FiledAug. 3, 1955 2 Sheets-Sheet 2 ai Z5; J /Z y; 'f INVENToRs .E Mc Gul/ee-30 (E 252,22; E um BY Pfg/VK 6: WaaDS/ W m l f; A Trams United StatesPatent Mice 3,023,914 HYDRAULICALLY ACTUATED DERRICK ATTACHMENT FRVEHICLES George E. McGuire, Richard F. Uren, and Frank G.

Woodside, Milwaukee, Wis., assignors, by mesne asslgnments, to L. A.Young Spring & Wire Corporation, Detroit, Mich., a corporation ofMichigan riginal application Aug. 3, 1955, Ser. No. 526,125, now PatentNo. 2,923,418, dated Feb. 2, 1960. Divided and this application Mar. 9,1959, Ser. No. 800,360 3 Claims. (Cl. 212-145) This invention relates toa hydraulically actuated jack for vehicles.

This application is a division of application Serial Number 526,125, ledAugust 3, 1955 and now Patent Number 2,923,418.

A major feature of the device is concerned with its unitaryorganization. The entire structure is mounted upon and within a framehaving the form of an inverted U, the legs of which are designed to restat the end directly upon the vehicle frame and have extensionsstraddling the vehicle frame and connected therewith for rigid support.The attachment frame has the form of a broad channel in all crosssections not -only for strength, but for weight distribution andstability of mounting on the frame of a truck or trailer to which it isapplied. The organization is such that power can be derived from anyappropriate power take-off and applied to a pump mounted on theattachment frame.

The entire organization is carried by the attachment frame including amast and boom; the aforesaid pump and its driving connections and theoil tank from which the pump derives hydraulic fluid; a hydraulic motorwhich rotates the mast and the motion transmitting connections from themotor to the mast; a winch and the hydraulic motor connections for itsoperation; an extensible section of the boom and the hydraulicconnections forits actuation; hydraulic steadying jacks for groundengagement at opposite sides of the vehicle and the supports upon whichthe jacks are pivotal between retracted and operative positions and theconnections for operating and re-tracting the jack rams; and thecontrols whereby the operation of all of the operating parts is subjectto direct and convenient control by the operator. Application of the boxframe of the attachment to the frame of the vehicle serves, in a singleoperation, to makeall of the parts instantly available for use, subjectonly to the connection to the vehicle power takeoff.

The steadying jacks are mounted on the outsides of the legs of theinverted U-shaped attachment frame or horizontal and laterallyprojecting studs which permit the jacks to be rotated bodily betweenhorizontal positions for transportation and vertical positions for use.Each jack includes an extensible ram permanently connected with thehydraulic system of the attachment to be extended and retracted asdesired by the operator. With the arms extended, support is provided forthe entire vehicle directly beneath the attachment frame and mast, andthe mast and boom are steadied against tilting as the boom swingslaterally during operation.

Further particulars of the structure broadly outlined will be found inthe accompanying drawings in which:

FIG. 1 is a view in side elevation ofthe attachment of the presentinvention as it appears mounted on the frame of a truck.

FIG. 2 is an enlarged view taken in section on line 2-2 of FIG. l.

FTG. 3 is a view fragmentarily illustrating the device of FIG. 1 as itappears in plan.

FIG. 4 is a view on an enlarged scale taken in section on the line 4-4of the FIG. 3.

3,%Z3,9l4 Y Patented Mar. 6, 1962 FIG. 5 is a view taken in section onthe line 5-5 of FIG. 4.

FIG. 6 is a view taken in section on the line 6-6 of FIG. 3.

Since the unitary attachment of the present invention can be mountedin'any desired position on a truck or trailer frame, the mountingshown'in FIGS. l to 4 is to be regarded as generically representative.It does, however, have definite advantages in the particularinstallation shown, since the attachment frame 20 is located between thetruck cab 21 and bed 22 where the control set generically designated byreference character 23, areA conveniently adjacent to the cab door 24.

The vehicle frame conventionally comprises a pair of laterally spacedchannels 25 as shown in FIG. 4. The attachment frame is of U-shaped forminfront and rear elevation and is channeled in cross section, havinganges 26 which are at least as deep as the anges 27 of the vehicle framechannels 25, so that the ends of Vthe legs of the inverted U-shapedattachment frame rest directly upon, and are supported directly from,the frame channels 25.

AThe web portions 28 of the channels comprising the attachment frame 20are very broad, as clearly appears in FIG. 1, therewith contributing tothe stability of the mounting. Plates 29 may be attached to the splicingextensions 30 which extend downwardly outside of the vehicle frame andare connected thereto in-any desired manner as by bolts 31. (FIG. 4).The plates 29, through which the attaching bolts 31 extend, reinforcethe vehicle frame as well as serving as shims between the splicingplates 30 of the vehicle frame to assureY a rigid connection.

.The attachment frame is provided with lateral shelves or supports attwo levels. There is a heavy bed shelf at -32 near the bottom of theattachment frame which is bolted tothe lower ends of the legs 26 of theattachment frame and may rest directly on the flanges 27 of the vehicleframe. Upon the bed shelf 32 are mounted the winch 35 and the hydraulicpump 36 and the actuating connections therefor as hereinafter described.Upon the intermediate shelf `or platform 37 are mounted the on anenlarged scale lower bearing 38 for the mast 40 and the motor andvdriving connections for rotating the mast as hereinafter described.Also mounted on shelf 37, and the outside of one of the legs 26 of theattachment frame, is the Valve casing 42 from which the supply and thevarious control connectionslead to the controlled parts.

Each of the splicing plates 30 is provided, as best shown in FIG. 2,with a bracket which supports a sleeve `111 disposed transversely of thevehicle frame. The sleeves 111, extending from opposite sides of theframe, are desirably cut to be spaced somewhat from each other, `as bestshown in FIG. 2, and are connected by a tubular dowel 112 to which theyare welded at 113. This part of the installation is the only onerequiring any welding for the mounting of the attachment to the truck.

Telescopically adjustable in the respective sleeves 111 .are extensionsleeves 114, which may be projected laterally to any desired extent fromthe truck frame and may be anchored in desired positions of extensionand rotative adjustment by means of rotatable pins 115, also shown inFIG. 2. Pins 115 are inserted through lany of a series of holes insleeve 114, which are positioned `axially along sleeve 114 and are alsoprovided in both vertical land horizontal planes so that a singleadjustment serves to position the sleeves 114 both axially andpivotally. At their ends, the telescopically extensible and rotatablesleeves 114 carry the jack cylinders 116, within which the rams 117 arehydraulically extensible to engage the feet 118 with the surface of theearth beside the truck, to contribute to the support and the bracing ofthe truck frame during the use of the hoist. The rams are double actingwithin their respective cylinders 116, having extension pressure pipeconnection at 119 land retraction pipe connection at 120. The rams arenormally carried in the horizontal position shown in dotted lines inFIG. 1 during movement of the truck on the highway, but they are rotatedto upright positions shown in -full lines in FIG. 1 prior to use of theequipment.

Also mounted on the bed plate 32 of the attachment frame 20 are pillowblocks for a drive shaft 120. (See FIGS. 3 and 4.) This shaft isconnected in any appropriate manner, as by the universally jointeddriving shaft 121, with the shaft 122 of the power take-oft 123 of thetruck transmission 124. It will be observed that the remote end of shaft120 is exposed at 12S (FIG. 3), so that `any other device requiringpower for its operation may be driven through the same power take-off.This may include another hoist of construction identical to that alreadydescribed and mounted either on the same vehicle or on a trailer.

The sprocket 130 mounted on shaft 120 is connected by chain 131 with thepump 36 to supply the hydraulic power for the operation of the variousdevices disclosed. The pump 36 pumps hydraulic liquid from a supplyreservoir 133, mounted on one of the splicing plates 301, desirably atthe side of the vehicle oppositelthat on which the control set 23 ismounted to the attachment frame 20. The valve levers arranged to controlthe valves (not shown) in the control housing 42, include a lever 13S,for the left stabilizing jack 116, 117; a lever 136 for the rightstabilizingy jack. In general, the arrangement is correlated with thoseparts which are raised or vlowered hydraulically so that the raising ofthe lever will raise the controlled part and the lowering ofthe leverbeyond its neutral or intermediate position will lower the controlledpart. Thus, levers 135 and 136 are raised to retract the rams 117 oftheir respective jacks and lowered to lower such rams.

In the neutral position of the several levers, all valves are closed,whereby the parts are held xed in the positions -to which they have beenmoved. It will be observed in FIG. that two pressure and reliefconnections 119 and 120 are supplied to the respective stabilizingjacks.

With the exception of the stabilizing jacks, use of which may beoptional in many cases, no mounting work is required other than thepositioning of the attachment frame on the vehicle frame with thesplicing extensions of its legs straddling the frame and connectedtherewith. However, the connection of the jack bearing. sleeves to eachother beneath the frame provides an extremely strong rigidifying support4for the Iframe as well as for the attachment. It may be noted that whenthe jacks are in use, each may be extended to any desired degree ofprojection, independently of the other, so that the vehicle andattachment will be stabilized regardless of ground surface levels.

The unitary mounting of the apparatus upon and within the attachmentframe not only greatly expedites the mounting and dismounting withrespect to a vehicle frame, but it is noteworthy that the attachmentframe as shown is actually outside of, and in weather protectiverelation to, much of the mechanism so that, quite apart from any otherhousing element, it acts as a partial hous-Y ing for the hydraulicmotors and driving connections.

We claim:

l. In a device of the character described including a vehicle frame, aunitary hoist adapted to be mounted on said frame and comprising a boxframe having lower portions seated upon the vehicle frame and havingsplicing means straddling the vehicle `frame and connected therewith ata level below the box frame, hydraulic jack means mounted onsaidsplicing means including extensible rams provided with supportingfeet, a hydraulic pump mounted on said frame, valve controlled meanscarried by said frame for connecting the pump with respective jack meansfor the selective operation of their rams, and a mounting bracket onwhich said rams may be pivoted on a horizontal axis to and fromoperative position normal to the ground and on Ywhich said rams aremovable laterally with respect to said frame simultaneously with saidpivotal movement.

' 2. In va hoist attachment for a vehicle, the combination with aunitary hoist having a frame mounted on the vehicle, a pair of jacksconnected with the hoist frame 4and disposed at opposite sides of thevehicle, each of said iacks including a mounting extending beneath theadjacent pontion of the vehicle and the respective mountings of saidjacks having a cross connection with each other beneath said vehicleportions, each said jack comprising al cylinder pivoted to its mountingfor movement between upright and horizontal positions and betweenlaterally extended laterally retracted positions and an extensible ramtelescopically associated with the cylinder and provided with a bearingfoot Iand flexible pressure connections to the respective cylinders forextending the respective rams and accommodating pivotal and lateralmovement of the cylinders between operative and inoperative positions.

3. In a device of the characterdescribed the combina tion with a hoisthaving a frame adapted for mounting 'on a vehicle having a frame, thehoist frame having extensions for connection with the vehicle framewhich project to a level below the vehicle frame upon which the hoistframe is adapted to be mounted, of transverse bearing means connectedwith the respective extensions and projecting outwardly therefrom, meansconnecting said extensions with each other at a level below the level ofthe vehicle frame upon which the hoist frame is to be mounted, and jackshaving bearing means and upon which the jacks are movable pivotally andaxially between inoperative and general horizontal positions andoperative and general upright positions, together with jack ramsextensibly mounted respecting the cylinders, the cylinders havingilexible pressure fluid connections -for the projection of said rams.

References Cited in the file of this patent UNITED STATES PATENTS2,167,026 Hatch July 25, 1939 2,509,950 Zierke May 30, 1950 2,645,360Raymond July 14, 1953 2,811,386 Shaw Qct, 2,9, 19,57

